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You dont compress a piston with a C clamp, you use a piston ring compressor to compress the rings and tap the top with a hammer to sit it back in to the cylinder bore. The C clamp is used for compressing valve springs. *AArOn*
The purpose of a piston ring expander is to make it easier remove and install piston rings. Because of the low torque they use, they help to prevent damage to the piston rings.
ring groove cleaner (if needed) and piston ring pliers (can just use your hand or needle nose)
If you only use one piston ring on 80cc bike engine, the compression ration will be reduced.
It is used as a compressor. It has the same advantages over a piston compressor as a gas turbine engine has over a piston engine. i.e. no valves, much lower part count and much greater efficiency.
The numbers like .75 .50 indicate the oversize of the piston ring that will be used for repair. For instance if the engine has a diameter of 70 mm and you need to open the cylinder bore for repair in .50 mm, you need to use one piston ring with diameter 70.50 mm.
Gently.Answer:Once the piston is removed from the bore the ring or rings are exposed. Each ring will have a gap or split in one place as it goes around the piston. This gap is spread open and the ring lifted off the piston.If you need to reuse these rings or the pistons they are for you use a special tool.If you don't care gloves are recommended and fingers will do the job.Careful! The rings can break when flexed like this and create flying sharp steel pieces!
The only way to "check" a piston would be to remove it and visually inspect for damage and wear.Make certain that the piston is not cracked or otherwise damaged.check the ring grooves. Use a piston ring and a set of feeler gauges to determine the amount of wear. Excessive ring groove wear can result in piston failure and if the piston shatters, it can cause the engine to fail completely.Next, use a micrometer to determine the difference in the diameter of the piston between the top and bottom. The piston will wear and if the difference between the top and bottom is too great, the engine will exhibit "piston slap".Check the fit of the wrist pin, it should be tight.HOWEVERYou can run a compression test and get a good idea whether the piston is functioning somewhat correctly.
To replace the piston rings, you will nee to use a ring compressor tool or two pliers to remove the old rings. Place on the new rings, and scatter the gaps in the rings. Apply some engine oil to the rings so they are easier to get in place.
the tool you are looking for is called a piston remover, sold at every local auto zone As the rings in the piston wear on the wall of the cylinder, a ridge forms at the top of the cylinder. This has to be removed with a Ridge Reamer. It cuts the ridge down until the cylinder is smooth otherwise the rings in the piston would catch on it and the piston cannot be removed. Once the cylinder is smooth, you can tap the piston out using the handle of a wooden handled hammer. To install the piston back in, you use a Ring Compressor that squeezes the rings into the grooves of the piston. Put lengths of plastic tubing over the Rod Bolts so that you don't nick the crankshaft and tap the piston into the cylinder with the same wooden hammer handle.
6.0 powerstrokes use a VGT turbo which the silencer ring was cast into the compressor itself. you can cut it out but that is not recommended. early 03 6.0's had a silencer ring but dont know how to remove it.
This is another of those situations where you need someone to show you how, but if you want to try on your own, start with the oil ring. Depending on the type, it may have come in 3 pieces. The 3 piece oil rings are a bit of a puzzle for the first timer, and you'll need to follow the guide, putting the center piece in place first then the two spring steel pieces will go to the top and bottom of the grove. Just put one end of the spring in place and feed it around the piston without kinking the spring steel. Also make sure the center ring doesn't overlap itself when you're done. Or the oil ring may be a single piece. For installing single piece rings sometimes snap ring expander pliers can help you expand the ring while you slide it over the piston. The rings are somewhat springy, and will tolerate expanding enough to get them over the piston, but don't try to open them up beyond that. Look at the package and note the marking that indicates the top of the piston. The three piece oil ring won't require orientation like the single piece other rings, but look carefully and note the markings. Sometimes it's a dot on the piston, sometimes it's a dimple but the package should show what to look for. Last, use a ring compressor over the pistons when you're putting the piston into the cylinder. Align the "front" marker on the piston to the front of the engine then press the piston into the cylinder, making sure that the rod cap bolts don't scratch the crankshaft.